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4 years ago

What are the steps to solve d=1/e + 1/f for e ?

Mathematics

1 answer:

konstantin123 [22]4 years ago

8 0

Solve for e

d = 1/e + 1/f

Move 1/f to the left side of the = sign

d - 1/f = 1/e

Multiply each side by e

e(d - 1/f) = e(1/e)

e(d - 1/f) = 1

Divide out (d - 1/f)

e(d - 1/f) / (d - 1/f) = 1 / (d - 1/f)

e = 1 / (d - 1/f)

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2 years ago

How would you also do this??

Vesna [10]

4(5x + 7) = 128

First, I'd do distributive property and get:

20x + 28 = 128

Then, subtract 28 from each side.

20x = 100

Next, I'd divide 100 by 20 = 5

x = 5

4 *(5(5) + 7) = 128

5 * 5 = 25

4 * (25 + 7)

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Therefore, the perimeter = 2l + 2w

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BUT we know that x = 5

w = 5(5) + 7 = 32

2(4) + 2(32)

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Therefore, the perimeter would be 72 inches.

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4 years ago